/Engine/Source/Runtime/Engine/Classes/Animation/AnimCompress.h
Common compression utility to remove 'redundant' keys based on the provided delta thresholds
static void FilterTrivialKeys ( [TArray](API\Runtime\Core\Containers\TArray)< struct [FTranslationTrack](API\Runtime\Engine\Animation\FTranslationTrack) > & PositionTracks, [TArray](API\Runtime\Core\Containers\TArray)< struct [FRotationTrack](API\Runtime\Engine\Animation\FRotationTrack) > & RotationTracks, [TArray](API\Runtime\Core\Containers\TArray)< struct [FScaleTrack](API\Runtime\Engine\Animation\FScaleTrack) > & ScaleTracks, float MaxPosDelta, float MaxRotDelta, float MaxScaleDelta )